Retractable vehicle step

A retractable vehicle step is attachable to a vehicle or truck, such as at the rear portion. The vehicle step facilitates access to a cargo hold of the vehicle. Advantageously, the vehicle step provides clearance space relative to a tailgate of the vehicle by displacing a stepping member of the vehicle step in a generally lateral direction. The vehicle step desirably has a covered and protected biasing mechanism for transitioning between retracted and extended positions of the stepping member. Another advantage is that the vehicle step is readily attachable to the vehicle using already existing connection members, thereby generally eliminating or mitigating the need for customized retrofitting and avoiding undesirable installation cost and time. Further, the vehicle step may be pulled out from under the vehicle by the foot of a user.

Skip to: Description  ·  Claims  ·  References Cited  · Patent History  ·  Patent History
Description
INCORPORATION BY REFERENCE TO ANY PRIORITY APPLICATIONS

Any and all applications for which a foreign or domestic priority claim is identified in the Application Data Sheet as filed with the present application are hereby incorporated by reference under 37 CFR 1.57.

BACKGROUND OF THE INVENTION Field of the Invention

The invention relates generally to a stepping assist for vehicles. In particular, certain embodiments of the invention relate to a retractable vehicle step which is moveable between a retracted or storage position and an extended position in which it functions as a step assist to facilitate access to a tailgate or cargo area of a vehicle such as a truck. In some embodiments, the stepping assist allows access to a cargo bed while advantageously providing tailgate clearance.

Description of the Related Art

Many vehicles such as trucks provide a fixed position stepping assist to allow access to the cargo bed of the truck.

There are also retractable stepping assists which are meant to provide truck cargo bed access.

SUMMARY OF THE INVENTION

Certain embodiments of the invention provide a retractable vehicle step that is attachable to a rear portion of a vehicle or truck. The vehicle step facilitates access to a cargo hold of the vehicle. Advantageously, the vehicle step may provide clearance space relative to a tailgate of the vehicle by displacing a stepping member of the vehicle step in a generally lateral direction. The vehicle step desirably has a covered and protected biasing mechanism for transitioning between retracted and extended positions of the stepping member. Another advantage is that the vehicle step may be readily attachable to the vehicle using already existing connection members, thereby generally eliminating or mitigating the need for customized retrofitting and minimizing or avoiding undesirable installation cost and time.

Some embodiments provide a retractable vehicle step. The retractable vehicle step generally comprises a stepping member and a biasing mechanism. The stepping member is moveable between a retracted position and an extended position. The biasing mechanism is operably coupled to the stepping member. In some embodiments, the biasing member generally comprises a moveable retaining surface and a cam surface such that in the retracted position the cam surface contacts the retaining surface and urges the stepping member toward the retracted position. Advantageously, the stepping member is substantially laterally displaced by a predetermined distance when transitioning between the retracted position and the extended position. In some embodiments, the retractable vehicle step is manually operable by the foot or other appendage of a user.

Some embodiments provide a retractable vehicle side step. The retractable vehicle side step generally comprises a stepping member and a biasing mechanism. The stepping member is moveable between a retracted position and an extended position. The biasing mechanism is operably coupled to the stepping member. In some embodiments, the biasing member urges the stepping member toward the retracted position. In some embodiments, the retractable vehicle step is manually operable by the foot or other appendage of a user.

In some embodiments, there is disclosed a retractable step assist designed to be mounted to a vehicle having a side panel. The step assist desirably includes a first support arm, a second support arm and a step member. The step member desirably includes an upper stepping surface defining a support plane, the first support arm and the second support arm connected to the step member so that the first support arm and the second support arm are pivotable with respect to the step member about a third axis and a fourth axis, respectively. The first support arm and the second support arm allowing the step member to move between a retracted position and a deployed position outward from the retracted position. In some embodiments, the first support arm and the second support arm are configured to allow the step member to move between a retracted position wherein at least a portion of the step member is above a lower edge of the vehicle side panel and a deployed position outward from the retracted position wherein at least a portion of the step member extends outward from the vehicle side panel.

In some embodiments, when the step member is in the deployed position, the arms and step member act to self-energize the step assist. In some embodiments, the step assist is not self-energized when in the retracted position, but may be held in place by a biasing member or cam assembly.

In some embodiments, the step member is angled with respect to the horizontal when in a retracted position. In some embodiments, the step member is angled downward in an outboard direction when the step assist is in a retracted position. In some embodiments, the outboard end of the stepping surface is vertically spaced no more than ½ inch, no more than 1 inch, no more than 2 inches, no more than 3 inches, or no more than 4 inches below the bottom edge of the side panel when the step assist is in a retracted position. In some embodiments, the top of stepping surface is vertically spaced no more than ½ inch, no more than 1 inch, no more than 2 inches, no more than 3 inches, or no more than 4 inches below the panel of the vehicle when in a deployed position.

In some embodiments, the arms of the step assist contact each other when the step assist is in a deployed position. In some embodiments, a biasing member serves hold the step assist in a retracted position and upon movement of the step assist from the retracted position, the biasing member helps to deploy the step assist.

For purposes of summarizing the invention, certain aspects, advantages and novel features of embodiments of the invention have been described herein above. Of course, it is to be understood that not necessarily all such advantages may be achieved in accordance with any particular embodiment of the invention. Thus, the invention may be embodied or carried out in a manner that achieves or optimizes one advantage or group of advantages as taught or suggested herein without necessarily achieving other advantages as may be taught or suggested herein. It is possible that even all of the specified advantages will not be present. Rather, the scope of the claims is not limited by these advantages unless expressly so stated.

All of these embodiments are intended to be within the scope of the invention herein disclosed. These and other embodiments of the invention will become readily apparent to those skilled in the art from the following detailed description of the preferred embodiments having reference to the attached figures, the invention not being limited to any particular preferred embodiment(s) disclosed.

BRIEF DESCRIPTION OF THE DRAWINGS

Having thus summarized the general nature of the invention and some of its features and advantages, certain preferred embodiments and modifications thereof will become apparent to those skilled in the art from the detailed description herein having reference to the figures that follow, of which:

FIG. 1 is a simplified perspective view of a retractable vehicle step in a retracted or storage state mounted on a vehicle illustrating features and advantages in accordance with some embodiments of the invention.

FIG. 2 is a simplified perspective view of the retractable vehicle step of FIG. 1 in an extended state mounted on a vehicle illustrating features and advantages in accordance with some embodiments of the invention.

FIG. 3 is a simplified rear view of the retractable vehicle step of FIG. 2 in a retracted state mounted on a vehicle illustrating features and advantages in accordance with some embodiments of the invention.

FIG. 3A is a simplified schematic top view of a retractable vehicle step in both retracted and extended states showing its clearance features relative to a vehicle on which it is mounted illustrating features and advantages in accordance with some embodiments of the invention.

FIG. 3B is a simplified schematic top view of a retractable vehicle step in both retracted and extended states showing its clearance features relative to a vehicle on which it is mounted illustrating features and advantages in accordance with some embodiments of the invention.

FIG. 4 is a simplified perspective of a retractable vehicle step in a retracted or storage state illustrating features and advantages in accordance with some embodiments of the invention.

FIG. 4A is a top view of the retractable vehicle step of FIG. 4 in a retracted or storage state illustrating features and advantages in accordance with some embodiments of the invention.

FIG. 5 is a simplified perspective of the retractable vehicle step of FIG. 4 in an extended state illustrating features and advantages in accordance with some embodiments of the invention.

FIG. 5A is a top view of the retractable vehicle step of FIG. 5 in an extended state illustrating features and advantages in accordance with some embodiments of the invention.

FIG. 6 is a simplified exploded perspective of the retractable vehicle step of FIG. 4 illustrating features and advantages in accordance with some embodiments of the invention.

FIG. 7 is a partial sectional view of the retractable vehicle step in a retracted or storage state illustrating features and advantages in accordance with some embodiments of the invention.

FIG. 8 is a partial sectional view of the retractable vehicle step in a transition state illustrating features and advantages in accordance with some embodiments of the invention.

FIG. 9 is a partial sectional view of the retractable vehicle step in an extended state illustrating features and advantages in accordance with some embodiments of the invention.

FIG. 10 is a simplified schematic view of a powered retractable vehicle step system illustrating features and advantages in accordance with some other embodiments of the invention.

FIG. 11 is a side view of another embodiment of a retractable vehicle step in a retracted position.

FIG. 11A is a top view of the retractable vehicle step of FIG. 11.

FIG. 12 is a side view of the retractable vehicle step of FIG. 11 in an extended position.

FIG. 13 is an embodiment of a retractable vehicle step mounted to a vehicle in a retracted position.

FIG. 14 is the retractable vehicle step of FIG. 13 mounted on a vehicle in an extended position.

FIG. 15 is a perspective view of the retractable vehicle step of FIG. 13.

FIG. 16-FIG. 16d are side views of the retractable vehicle step of FIG. 13 shown moving from a retracted position to an extended position.

FIG. 17 is an upper perspective view of the retractable vehicle step of FIG. 13 shown in a retracted position.

FIG. 18 is a bottom perspective view of the retractable vehicle step of FIG. 13 shown in a retracted position.

FIG. 19 is an exploded perspective assembly view of the retractable vehicle step of FIG. 13.

FIG. 20 is a perspective view of another embodiment of a retractable vehicle step mounted to a vehicle in a retracted position.

FIG. 21 is a perspective view of the retractable vehicle step of FIG. 20 mounted on a vehicle in an extended position.

 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The preferred embodiments of the invention described herein relate generally to a stepping assist for vehicles and, in particular, to a retractable vehicle step which is desirably moveable between a retracted or storage position and an extended position in which it functions as a step assist to facilitate access to a cargo bed of a vehicle such as a truck while advantageously providing tailgate clearance.

While the description sets forth various embodiment specific details, it will be appreciated that the description is illustrative only and should not be construed in any way as limiting the invention. Furthermore, various applications of the invention, and modifications thereto, which may occur to those who are skilled in the art, are also encompassed by the general concepts described herein.

FIGS. 1-3 show different views and positions of certain embodiments of a retractable vehicle step or tailgate step assembly 20 mounted on or attached to a vehicle or truck 10. As discussed further herein, one advantage of certain embodiments of the retractable vehicle step 20 is that it desirably provides tailgate clearance.

The vehicle 10 comprises a generally rear portion or end 11 at which location the retractable vehicle step 20 is positioned. For convenience and reference, the schematic drawing of FIG. 3A shows a top view of the vehicle 10 as having a lateral axis 12, a longitudinal or long axis 13 and a generally vertical axis 14. These axes can be considered to be respective X-, Y- and Z-axes of a three dimensional Cartesian coordinate system.

The vehicle rear portion 11 includes a tailgate 15 and a bumper 16. As discussed in more detail later herein, the retractable vehicle step 20 is attached to a rear underbody, chassis or frame 18 of the vehicle 10 using, in certain embodiments, already existing connection members (e.g., trailer hitch bolts 19a, 19b or the like) on the vehicle 10. The retractable vehicle step 20 comprises, among other components as discussed in further detail below, a stepping member 22.

FIG. 1 shows the retractable vehicle step 20 in a retracted or storage position or state generally denoted by “R.” In the retracted position, the stepping member 22 is generally positioned below and within the projection of the horizontal perimeter of the bumper 16.

FIG. 2 shows the retractable vehicle step 20 in an extended or operational position or state generally denoted by “E.” In transitioning from the retracted position to the extended position, the stepping member 22 exits the rear portion 11 of the vehicle 10 from below the bumper 16 and advantageously provides a stepping assist, with tailgate and/or bumper clearance, for a user to access the cargo bed of the vehicle 10. During this motion of the stepping member 22, in certain embodiments, it is displaced laterally, longitudinally and vertically.

FIG. 3 shows the retractable vehicle step 20 in a retracted position R. In some embodiments, in the retraced position R, the vehicle step 20 is generally positioned below the tailgate 15 of the vehicle 10.

FIG. 3A shows the lateral and longitudinal displacements of the stepping member 22 when transitioning between the retracted and extended positions as dlateral and dlongitudinal. Stated differently, the stepping member 22 extends in an angular manner from the retracted position to the extended position. In other words, the desirable and predetermined lateral displacement advantageously creates an increased effective step width which provides clearance from the tailgate 15 (and/or bumper 16) even when the tailgate 15 is in the open position (as shown schematically in FIG. 3) and allows convenient use. FIG. 3B also shows a stepping member 22 transitioning between the retracted and extended positions. In this illustrated embodiment, in the retracted position the outer edge of the stepping member 22 is positioned closer to the side of the vehicle 10. In this embodiment, the lateral movement dlateral of the stepping member 22 as it transitions between the retracted and extended positions is small than the lateral movement dlateral of the stepping member 22 shown in FIG. 3A that is positioned further towards the midline of the vehicle 10 when in the retracted position.

In some embodiments, the lateral displacement (dlateral) is about 6.4 cm (2.5 inches). In another embodiment, the lateral displacement (dlateral) is in the range from about 5.1 cm (2 inches) to about 7.6 cm (3 inches), including all values and sub-ranges therebetween. In yet another embodiment, the lateral displacement (dlateral) is in the range from about 2.5 cm (1 inch) to about 12.7 cm (5 inches), including all values and sub-ranges therebetween. In another embodiment, the lateral displacement dlateral may be at least 2 inches, at least 2.5 inches, at least 3 inches, at least 3.5 inches, or at least 4 inches. In modified embodiments, the lateral displacement may efficaciously be more or less, as needed or desired.

As shown in FIG. 4, and discussed further below, in certain embodiments the retractable vehicle step 20 includes an upper end 41, a lower end 43, a front end 45, and a back end 47. The upper end 41 of the retractable vehicle step 20 may be configured to readily be attachable to the vehicle 10 using industry standard trailer hitch bolts 19a, 19b which are provided on virtually all trucks and the like by manufacturers. Advantageously, this permits the retractable vehicle step 20 of certain embodiments to be mountable to a vehicle using already existing connection members without the undesirable need for extra components or custom installation. However, in modified embodiments, the retractable vehicle step 20 may be constructed to permit custom installation, as needed or desired to various parts of the vehicle 10, for example the frame 18 or bumper 16. For example, a plurality of designs may be provided with each suitable for a particular vehicle type.

The retractable vehicle step 20, in certain embodiments, generally comprises a upper mount 24, a biasing member or spring 26, a moveable plunger or piston 28, a medial inner or first arm 30, a medial outer or second arm 32, a lower mount 34, and the stepping member 22 at a lower, front-most position. A plurality of clevis pins, pivot pins, screws or the like, as described further below, connect the various components of the retractable vehicle step to form an assembly.

In certain embodiments, the upper mount 24 is angular or generally L-shaped with a substantially hollow interior or channel which desirably provides for a light weight device while maintaining structural integrity. The upper mount 24 is desirably rigidly mountable to the vehicle 10 and comprises a back portion or end 36 which includes a pair of spaced through holes or passages 38a, 38b. In certain embodiments, the through holes or passages 38a, 38b are desirably configured and dimensioned to receive connection members or elements, such as the already existing respective vehicular trailer hitch bolts 19a, 19b (see FIG. 3A), to facilitate connection or attachment to the vehicle 10 without the undesirable need for extra components or custom installation. The through holes 38a, 38b can include two portions with different diameters to accommodate the bolts heads and their shanks, as needed or desired.

Referring to FIG. 6, the upper mount 24 further comprises a front portion or end 40 which includes a socket or opening 42 that receives at least a portion of the spring 26 and plunger 28. The front portion 40 comprises a first pair of front aligned mount holes 44a, 44b which are also generally aligned with and below the socket 42. The holes 44a, 44b receive a clevis pin, pivot pin, or axle 46 or the like to pivotally couple or connect the upper mount 24 to the medial outer arm 32.

The front portion 40 further comprises a second pair of front aligned mount holes 48a, 48b offset further toward the front of upper mount 24 from the first pair of aligned holes 44a, 44b. The holes 48a, 48b receive a clevis pin, axle or pivot pin 50 or the like to pivotally couple or connect the upper mount 24 to the medial inner arm 30.

The upper mount 24 desirably comprises a structurally strong and/or light weight material. In certain embodiments, the upper mount 24 comprises a fiber reinforced composite material such as a carbon fiber reinforced plastic or thermoplastic with, for example, a polymer matrix or resin. In modified embodiments, the upper mount 24 can comprise other suitable composites, plastics, thermoplastics, metals, alloys, ceramics, among others, with efficacy, as needed or desired.

In certain embodiments, as shown for example in FIG. 5 and in greater detail in FIG. 6, the biasing member 26, which is part of an internal biasing mechanism or system 119 to provide for controlled energy storage and release, comprises an internal spring. The spring 26, in certain embodiments, is a compression spring with an upper or top portion or end 52 which is received within the socket 42 and a lower or bottom portion or end 54 which is received within the plunger 28. Advantageously, the compression spring 26 provides a compact component which is durable and desirably has a high fatigue life. In modified embodiments, the biasing spring 26 can comprise other resilient energy storage and release means such as an arched or leaf spring or a V-shaped or angled spring with efficacy, as needed or desired.

Advantageously, in certain embodiments, the internal biasing spring 26 is covered and/or protected (i.e., not exposed to the ambient environment) by the socket 42 and the plunger 28. This desirably prevents or mitigates breakage, failure, malfunction and/or fouling of the internal biasing spring 26, especially when the vehicle 10 is operated in rough terrains such as during off road operation, and provides a durable and long-lasting vehicle step 20.

The biasing spring 26 desirably comprises a structurally strong and/or light weight material. In certain embodiments, the spring 26 comprises a metal or alloy such as stainless steel or aluminum. In modified embodiments, the spring 26 can comprise other suitable metals, alloys, composites, plastics, thermoplastics, ceramics, among others, with efficacy, as needed or desired.

Continuing to refer to FIG. 6, in certain embodiments, the plunger or piston 28 is moveable in a direction generally aligned with or parallel to the vertical axis 14 to provide an internal biasing mechanism that, along with the spring 26, controls the retraction and extension of the vehicle step 20. The upper portion 52 of the spring 26 extends into the socket 42. An opening or cavity 58 of the plunger receives the spring 26 with the lower spring end 54 in contact with a surface 60 of the plunger cavity 58. The spring 26 extends out of the open upper end 56 of the plunger 28.

The plunger or piston 28 comprises a lower or bottom surface 62 which forms a retaining or bearing surface that, as described in further detail below, desirably engages a specially contoured cam portion or surface 82 of the medial outer arm 32. Advantageously, in certain embodiments, the combination of the plunger retaining surface 62, the spring 26 and the contoured cam portion or surface 82 of the medial outer arm 32 provides an internal and protected biasing mechanism or system that urges the vehicle step 20 towards the retracted and extended positions while facilitating transition between the retracted and extended positions. Moreover, as noted above and discussed further below, these embodiments of the internal biasing mechanism prevent or mitigate breakage, fracture, malfunction, and/or fouling, especially in off road terrains and the like.

The plunger 28 desirably comprises a structurally strong and/or light weight material. In certain embodiments, the plunger 28 comprises a metal or alloy such as stainless steel or aluminum. In modified embodiments, the plunger 28 can comprise other suitable metals, alloys, composites, plastics, thermoplastics, ceramics, among others, with efficacy, as needed or desired.

The medial inner first arm 30 is pivotally coupled or connected to and positioned between the upper mount 24 and the lower mount 34. The medial inner arm 30 comprises an upper or top through hole or passage 64 aligned with the second pair of upper aligned mount holes 48a, 48b which receive the clevis pin, axle, or pivot pin 50 or the like. The medial inner arm 30 further comprises a lower or bottom through hole or passage 66 aligned with a second pair of lower aligned mount holes 84a, 84b which receive a clevis pin, axle or pivot pin 68 or the like to pivotally couple or connect the medial inner arm 30 and the lower mount 34.

In certain embodiments, the medial inner first arm 30 comprises a slot or through hole 70. This is advantageously configured to reduce device weight while maintaining structural integrity and overall strength.

The medial inner first arm 30, in certain embodiments, further comprises a mechanical stop, protrusion, lip or extension 72 proximate the passage 66. The mechanical stop 72 advantageously controls the maximum extension (generally position “E”) by contacting or abutting the medial outer arm 32. In certain embodiments, the final retraction (generally position “R”) is controlled when the inner surfaces of both medial arms 30, 32 contact or abut at the step retracted position to stop further retraction.

The medial inner arm 30 desirably comprises a structurally strong and/or light weight material. In certain embodiments, the medial inner arm 30 comprises a fiber reinforced composite material such as a carbon fiber reinforced plastic or thermoplastic with, for example, a polymer matrix or resin. In modified embodiments, the medial arm 30 can comprise other suitable composites, plastics, thermoplastics, metals, alloys, ceramics, among others, with efficacy, as needed or desired.

The medial outer second arm 32 is pivotally coupled or connected to and positioned between the upper mount 24 and the lower mount 34. The medial outer arm 32 comprises an upper or top through hole or passage 74 aligned with the first pair of upper aligned mount holes 44a, 44b which receive the clevis pin, pivot pin or axle 46 or the like. The medial outer arm 32 further comprises a lower or bottom through hole or passage 76 aligned with a first pair of lower aligned mount holes 86a, 86b which receive a clevis pin, axle or pivot pin 78 or the like to pivotally couple or connect the medial outer arm 32 and the lower mount 34.

In certain embodiments, the medial outer second arm 32 comprises a slot or through hole 80. This is advantageously configured to reduce device weight while maintaining structural integrity and overall strength.

The medial outer arm 32, in certain embodiments, comprises a specially contoured cam portion or surface 82 adjacent the passage 74. As discussed in further detail below in connection with FIGS. 6-9, the cam portion or surface 82 desirably abuts the plunger retaining surface 62 and desirably provides a biasing force to the stepping member 22 in the retracted and extended positions and facilitates transition between the retracted and extended positions.

The medial outer arm 32 desirably comprises a structurally strong and/or light weight material. In certain embodiments, the medial outer arm 32 comprises a fiber reinforced composite material such as a carbon fiber reinforced plastic or thermoplastic with, for example, a polymer matrix or resin. In modified embodiments, the medial arm 32 can comprise other suitable composites, plastics, thermoplastics, metals, alloys, ceramics, among others, with efficacy, as needed or desired.

In certain embodiments, the lower mount 34 is angular or generally L-shaped. The lower mount 34 generally comprises a front portion or end 35 and a back portion or end 37 and is positioned between the medial arms 30, 32 and the stepping member 22. The front portion 35 of the lower mount 34 is pivotally coupled or connected to the medial arms 30, 32 and the back portion 37 of the lower mount 34 is substantially rigidly coupled or connected to the stepping member 22.

The lower mount 34 comprises a second pair of top or upper spaced and aligned holes 84a, 84b which are aligned with the lower passage 66 of the inner arm 30 and receive the clevis or pivot pin 68 to pivotally couple or connect the lower mount 34 and the inner arm 30. The lower mount 34 further comprises a first pair of top or upper spaced and aligned holes 86a, 86b which are displaced toward the front relative to the holes 84a, 84b. The holes 86a, 86b are aligned with the lower passage 76 of the outer arm 32 and receive the clevis or pivot pin 78 to pivotally couple or connect the lower mount 34 and the outer arm 32. Clearance space 88 is desirably provided to receive lower portions of the inner and outer arms 30, 32.

In certain embodiments, the lower mount 34 comprises one or more slots or through holes 90 (see, e.g., FIG. 4). These are advantageously configured to reduce device weight while maintaining structural integrity and overall strength.

The lower mount 34, in certain embodiments, proximate its distal end comprises a slot 92 generally aligned with a pair of passages or through holes 94a, 94b. As discussed below, the slot 92 is configured to facilitate connection to the stepping member 22. Screws 96a, 96b or the like extend through respective holes 94a, 94b to desirably rigidly connect the distal mount 34 and the stepping member 22.

As shown for example in FIG. 6, in some embodiments, the front end 35 of the lower mount 34 further includes an angled portion 39. In some embodiments, the lateral displacement dlateral of the stepping member 22 as it moves from the retracted position R to the extended position E may be accomplished by attaching the vehicle step 20 to the vehicle 10 at an angle to the longitudinal axis 13 of the vehicle 10. The angle of attachment may be changed to conveniently increase or decrease the amount of lateral displacement dlateral. Angled portion 39 of the lower mount 34 may be provided such that the outermost edge of stepping member 22 extends substantially parallel to the bumper 16 of the vehicle 10 in the extended position E. In the illustrated embodiment, the stepping member extends to the left of the tailgate 15 (see, e.g., FIG. 3) in the extend position E. In some embodiments, the vehicle step 20 may be configured such that it extends to the right of the tailgate 15. The angled portion 39 may be appropriately configured to position the outer edge of the stepping member 22 in a substantially parallel arrangement to the bumper 16. Alternatively, the angled portion 39 may be configured such that the outer edge of the stepping member 22 extends substantially perpendicular to the bumper 16 to, for example, facilitate entrance into or exit from the cargo bed via the side of the tailgate 15 when it is open. In some embodiments, the vehicle step 20 is arranged on the vehicle 10 such that the outer edge of the stepping member 22 is angled with respect to the lateral axis 12 of the vehicle 10 to the same degree in both the retracted and extended position. In some embodiments, this angle is between approximately 0 and 10, 0 and 20, or 0 and 45 degrees from the lateral axis 12.

The lower mount 34 desirably comprises a structurally strong and/or light weight material. In certain embodiments, the lower mount 34 comprises a fiber reinforced composite material such as a carbon fiber reinforced plastic or thermoplastic with, for example, a polymer matrix or resin. In modified embodiments, the lower mount 34 can comprise other suitable composites, plastics, thermoplastics, metals, alloys, ceramics, among others, with efficacy, as needed or desired.

The stepping member or T-nut step extrusion 22 desirably comprises a stepping deck 98. In certain embodiments, the stepping deck 98 comprises a ridged surface with ridges and valleys to provide stepping traction. In modified embodiments, the stepping deck 98 can efficaciously comprise other ridged or textured surfaces such corrugated, grooved, ribbed, dimpled, and the like, among others, as needed or desired. Various surface coatings, finishes or the like may be used with efficacy to provide enhanced traction, as needed or desired.

In certain embodiments, the stepping member 22 is substantially hollow to desirably provide a light weight component while maintaining structural integrity. In some embodiments, the stepping member 22 has a generally V-shaped configuration and comprises one or more support ribs 102 or the like.

As shown, for example, in FIG. 6, in certain embodiments one or more sides of the stepping member 22 are covered with a side cap 104 or the like for user protection. The side cap 104 can comprise any one of suitable materials such as, but not limited, to a generally rigid plastic or the like.

The stepping member 22 is configured to connect to the lower mount 34. In certain embodiments, the stepping member 22 comprises a slot 106 adjacent the lower mount 34 which is configured to receive a T-nut 108 or the like. The screws 96a, 96b engage the T-nut 108 to substantially rigidly connect or couple the stepping member 22 and the lower mount 34.

The stepping member 22 desirably comprises a structurally strong and/or light weight material. In certain embodiments, stepping member 22 comprises a metal or alloy such as aluminum or steel. In modified embodiments, the stepping member 22 can comprise other suitable metals, alloys, composites, plastics, thermoplastics, ceramics, among others, with efficacy, as needed or desired.

In some embodiments, the stepping member 22 (and/or the stepping deck 98) has a width (as measured generally along the direction of the lateral axis 12) of about 30.5 cm (12 inches) and a length (as measured generally along the direction of the longitudinal axis 13) of about 15.2 cm (6 inches). In modified embodiments, the stepping member 22 (and/or the stepping deck 98) may be dimensioned in other manners with efficacy, as needed or desired. For example, the stepping member 22 may have a width of at least 4 inches, at least 6 inches, at least 8 inches, or at least 10 inches. Similarly, the stepping member 22 may have a depth (as measured generally along the direction of the vertical axis 14) of at least 2 inches, at least 3 inches, at least 4 inches, at least 5 inches, or at least 6 inches.

The pins 46, 50, 68, 78, screws 96a, 96b and the T-nut 108 desirably comprise a structurally strong and/or light weight materials. In certain embodiments, a metal or alloy such as aluminum or steel is utilized. In modified embodiments, other suitable metals, alloys, composites, plastics, thermoplastics, ceramics, among others, can be utilized with efficacy, as needed or desired.

The retractable vehicle step, in accordance with embodiments of the invention, and its various components can be fabricated or created using a wide variety of manufacturing methods, techniques and procedures. These include, but are not limited to, casting, molding, machining, laser processing, milling, stamping, laminating, bonding, welding, adhesively fixing, and the like, among others.

FIGS. 7-9 illustrate certain embodiments of the operation of a biasing or urging mechanism 119 generally including the compression spring 26, the plunger 28 and the contoured cam portion 82 of the outer arm 32. FIG. 7 depicts the step retracted position or state “R,” FIG. 8 depicts a step transition position or state “T,” and FIG. 9 depicts the step extended position or state “E.” The step transition position or state “T” is a position as the step member 22 transitions between the retracted and extended positions.

The outer arm contoured cam portion 82 comprises a first cam surface or portion 121, a second cam surface or portion 123, and an intermediate cam surface or portion 125. An axis of rotation or rotation or pivot axis 127 is generally defined by the pin or axle 46.

Referring in particular to FIG. 7, in the step retracted position, the moveable plunger retaining surface 62 abuts or contacts the moveable first cam surface 121 and these two surfaces are in substantially flush engagement. In the step retracted position, the plunger 28 has a generally maximum extension out of the socket 42 and the spring 26 has a generally maximum tension force to provide a biasing or urging force towards the rotation axis 127. In other words, the retaining surface 62 is biased towards the rotation axis 127 to maintain the vehicle step 20 (and/or the stepping member 22 and/or the stepping deck 98) in the retracted position, but desirably without locking out the step in the retracted position.

Referring in particular to FIG. 8, in the step transition position or stage, the moveable plunger retaining surface 62 abuts or contacts the moveable intermediate surface 125 and these two surfaces are in substantially flush engagement. In the step transition position, the plunger 28 has a generally minimum extension out of the socket 42 and the spring 26 has a generally minimum tension (or maximum compression) force. In other words, though the retaining surface 62 is biased in the direction of the rotation axis 127, the spring compression force facilitates in the transition between the retracted and extended positions.

Referring in particular to FIG. 9, in the step extended position, the moveable plunger retaining surface 62 abuts or contacts the moveable second cam surface 123 and these two surfaces are not in substantially flush engagement. In the step extended position, the plunger 28 has a generally intermediate extension out of the socket 42 and the spring 26 has a generally intermediate tension force to provide a biasing or urging force towards the rotation axis 127. In other words, the retaining surface 62 is biased towards the rotation axis 127 to maintain the vehicle step 20 (and/or the stepping member 22 and/or the stepping deck 98) in the extended position, but desirably without locking out the step in the extended position.

Stated differently, the tensioned spring 26 provides an urging or biasing force in the retracted and extended positions to maintain the vehicle step 20 (and/or the stepping member 22 and/or the stepping deck 98) in the respective retracted and extended positions, while in the transition position the compressed spring 26 facilitates in the transition between the retracted and extended positions.

As noted above, in certain embodiments, the final retraction (“R”) is controlled when the inner surfaces of both medial arms 30, 32 contact or abut at the step retracted position to stop further retraction. Also as noted above, the medial inner arm stop 66 advantageously, in certain embodiments, controls the maximum extension (“E”) by contacting or abutting the medial outer arm 32.

FIG. 10 schematically shows a powered retractable vehicle step system 100 in accordance with some embodiments. The system 100 comprises a retractable vehicle step 20′ which is substantially the same as embodiments of the vehicle step 20 except that it has a biasing member that comprises an electronically operable gas spring 26′.

In certain embodiments, when the vehicle 10 is turned on by its ignition 131, the ignition 131 actuates a solenoid actuator, motor or device 133 to retract the vehicle step 20′ by operation of the gas spring 26′. This is convenient, for example, if the user forgets to retract the vehicle step 20′ after use, the ignition 131 automatically retracts the vehicle step 20′, thereby desirably protecting it from potential damage.

With reference to FIGS. 11 and 12 another embodiment of a retractable vehicle step is illustrated. The retractable vehicle step 300 is configured to be mounted to a vehicle (not shown). The retractable vehicle step 300 is further configured to have a first position and a second position. The first position comprises the vehicle step 300 in a retracted position and the second position comprises the vehicle step 300 to be in an extended position. In the retracted position, the retractable vehicle step 300 is preferably located in a substantially in-board position relative to the rear of a vehicle and, in the extended position, the retractable vehicle step 300 is in a substantially outboard position relative to the rear of a vehicle.

In some embodiments, the retractable vehicle step 300 preferably includes an upper mount 304, a stepping member 302 and connecting arms 306. Furthermore, the retractable vehicle step 300 preferably includes a biasing mechanism 319 including a biasing member 307, which in some embodiments may be substantially similar to the biasing member 26 of the embodiment of the retractable vehicle step 20 shown in FIG. 4.

The upper mount 304 may include one or more additional mounting portions (not shown) to facilitate securing the vehicle step 300 to a vehicle. In the particular embodiment of the retractable vehicle step 300 shown in FIGS. 11 and 12, the upper mount 304 is preferably a U-shaped mount which comprises pivotal connections P1′ and P2′. The pivotal connections P1′ and P2′ are preferably configured to pivotally connect the arms 306 to the upper mount 304. The upper mount 304 in some embodiments may further include certain electronic or mechanic actuation components which may be configured to actuate the retraction or extension of the retractable vehicle step 300. Such components may be substantially similar to those described above with reference to previous embodiments of a retractable vehicle step.

With continued reference to FIGS. 11 and 12, the retractable vehicle step 300 further includes arms 306. The arms 306 further include a first arm 314 and a second arm 316. The arm 314 is preferably secured by pivotal connection P1′ to the upper mount 304 and is secured to a step bracket 318 at pivotal mount P3′. The arm 316 is preferably secured to the upper mount 304 at pivotal mount P2′ and is secured to the step bracket 318 at pivotal connection P4′. The lengths and mounting positions of the connecting arms 306 are preferably sized and shaped so as to move the stepping member 302 downwards and outboard when the retractable vehicle step 300 is moved from a retracted position to an extended position.

In some embodiments, it is advantageous to configure the vehicle step 300 such that in the retracted position, the stepping surface 322 of the stepping member 302 is at an angle to the horizontal. As shown in FIG. 11A, the stepping member 302 need not be symmetrical. In some embodiments, the outer edge corner of the stepping member 302 may be rounded or otherwise shaped to minimize the amount of stepping member 302 that extends beyond the bumper if the vehicle step 300 is mounted in close proximity to the outer edge of the bumper of the vehicle. In some embodiments, the outer corner of the stepping member 302 is shaped to correspond to the rounded features of the bumper to present an aesthetically pleasing appearance when mounted and in the retracted position.

With continued reference to FIGS. 11 and 12, the step bracket 318 is preferably connected to the arms 306 at pivotal mount P4′ and pivotal mount P3′. The step bracket 318 is further configured to receive a stepping member 302. The stepping member 302 and the step bracket 318 in some embodiments may be secured to one another by fasteners so as to create a connection that may support the weight of a person stepping on the retractable vehicle step 300. In addition, it may be operated by the foot or other appendage of a user as described in greater detail below.

Though not shown, when mounted on the rear of a vehicle, it may be advantageous in some embodiments to mount the vehicle step 300 such that the stepping member 302 is displaced laterally a distance dlateral to provide clearance for, for example, an open tailgate. In some embodiments, this may be accomplished as described above with respect to vehicle step 20. FIG. 11A shows the vehicle step 300 from a top view, illustrating an angle formed between the arms 306 and the stepping member 302 according to some embodiments. As the stepping member 302 moves from the retracted to the extended positions, the angle between the arms 306 and the stepping member 302 preferable remains constant. In some embodiments, the stepping member 302 is positioned on the vehicle such that the outer edge of the stepping member 302 is substantially parallel to the bumper of the vehicle in both the retracted and extended positions. As described above with respect to the other embodiments, the stepping member 302 may alternatively be at an angle to the bumper of the vehicle.

In some embodiments, the retractable vehicle step is advantageously configured to permit manually operated retraction and extension. Manual operation may minimize the expense of manufacture and/or installation. In some embodiments, the retractable step is particularly configured to be moved between its retracted and extended positions by foot operation of a user. Advantageously, the vehicle step includes a mechanism to facilitate this operation. For example, in the embodiment shown in FIGS. 11 and 12, the vehicle step 300 includes biasing member 307, for example a spring. In the retracted position, shown in FIG. 11, biasing member 307 biases the stepping member 302 in the retracted position. The biasing member 307 compresses as the stepping member 302 is pulled outwards toward the extended position, thereby providing resistance to the movement outwards. As the stepping member 302 continues to move outwards, the biasing member 307 passes its inflection point and begins to expand rather than compress. The expansion of the biasing member 307 assists the continued extension of the stepping member 302. In the extended position, the vehicle step 300 may be self-energized or locked to prevent accidental retraction when weight is applied to the extended step, e.g., when a person steps on the stepping member 302 the vehicle step does not load in such a way to bias the vehicle step 300 in a retracted position. Described in another way, by stepping on the stepping member 302 the vehicle step will be substantially locked by the arms 306 so as to bias the vehicle step 300 to an open position. Self-energized features may be provided on any of the vehicle steps described herein.

To return a self-energized step to the retracted position, the stepping member 302 is partially lifted when in the extended position and pushed toward the vehicle and into the retracted position. The biasing member 307 again resists this movement inwards, for example, by compressing as the stepping member 302 moves inwards. If the vehicle step 300 is not self-energized, step may be moved toward the retracted position simply by pushing the step toward the retracted position. The resistance of the biasing member 307 to this movement helps resist unintended movement of the step 300 toward the retracted position when in use.

When the biasing member 307 passes its inflection point, it assists in the movement inwards and biases the stepping member 302 into the retracted position. In some embodiments, the biasing forces of the biasing member 307 are advantageously configured to allow the vehicle step 300 to be retracted and extended by the foot of a user, rather than a hand operated handle or lever or an automated system. In some embodiments, the vehicle step 300 is moved to the extended position by a user who hooks her foot onto the stepping member 302 and pulls it outwards toward the extended position. In some embodiments, an engagement portion may be provided on the step to facilitate the hooking of the foot. For example, a cavity on the underside of the step may be provided.

In some embodiments, biasing member or spring 307 engages a lower portion of upper mount 304 and is held in place at least at the end engaging the upper mount 304. For example, the spring 307 may rest in a cavity formed in upper mount 304 such that an upper portion of spring 307 is enclosed within the cavity and a lower portion of the spring 307 is outside of the cavity. The upper portion of the spring 307 is substantially prevented from moving along the X and Y directions as the stepping member 302 is moved from the retracted to the extended positions. The lower portion of the spring 307 outside of the cavity is not directly restrained by the cavity and is thereby allowed to move along the X and Y directions as the stepping member 302 moves from the retracted position to the extended portion. The lower portion of the sprint 302 may engage a spring mount 311 to facilitate attachment to the arms 306 and to permit movement of the lower portion of the spring 307 with respect to the upper portion of the spring 307 and the arms 306. In some embodiments, the cavity encloses the entire spring 307 with an upper-most portion configured to restrain an upper portion of the spring 307 from moving while a lower portion of the cavity allows movement of a lower portion of the spring 307. In some embodiments, some or all of the spring 307 may be engaged with a cylinder extending downward from a lower portion of the upper mount 304. The cylinder may function in a similar manner as the cavity described above, preventing a portion of the spring 307 from moving in the X and Y directions while allowing another portion to move in those directions as the stepping member 302 is moved from the retracted to the extended positions.

With reference to FIGS. 13-19, an embodiment of a retractable vehicle step is illustrated. The retractable vehicle step 500 is configured to be mounted to a vehicle such as the truck 450 shown in FIGS. 13 and 14. The retractable vehicle step 500 is further configured to have a first position and a second position. The first position comprises the vehicle step 500 in a retracted position and the second position comprises the vehicle step 500 to be in an extended position. In the retracted position as shown in FIG. 13 the retractable vehicle step 500 is preferably located in an in-board position relative to the side of the vehicle 450 and, in the extended position, as shown in FIG. 14 the retractable vehicle step 500 is in a substantially outboard position relative to the side of vehicle 450.

In some embodiments, the retractable vehicle step 500 can be positioned so that in a retracted position the vehicle step 500 resides substantially behind a portion of a vehicle body 456. That is the retractable vehicle step 500 is configured to retract behind the vehicle body 456 when in a retracted position so as to be unobtrusive.

With reference to FIGS. 16-16d, the retractable vehicle step 500 is illustrated in a retracted position shown in FIG. 16 and an extended position shown in FIG. 16d. When the retractable vehicle step 500 transitions from a retracted position as shown in FIG. 16 to an extended position as shown in FIG. 16d, in some embodiments the stepping member 502 of the retractable vehicle step 500 moves such that a portion of the stepping member 502 moves from a lower position to a raised position. Furthermore, the position of the stepping member 502 transfers from a substantially in-board position to a substantially outboard position as shown from FIG. 16 to FIG. 16d when the retractable vehicle step 500 is moved from a retracted position to an extended position. In some embodiments, the greater portion of the vehicle step 500 transitions from a raised position to a lower position as the step 500 moves from the retracted position to the extended position.

With reference to FIGS. 13-19, an embodiment of a retractable vehicle step 500 preferably includes an upper mount 504, a stepping member 502 and connecting arms 506. Furthermore, the retractable vehicle step 500 preferably includes a biasing mechanism 519 which may include a biasing member 507. In some embodiments, the biasing member 507 assists in providing for controlled energy storage and release and comprises an internal spring. The spring 507, in certain embodiments, is a compression spring. Advantageously, the compression spring 507 provides a compact component which is durable and desirably has a high fatigue life. In modified embodiments, the biasing spring 507 can comprise other resilient energy storage and release means such as an arched or leaf spring or a V-shaped or angled spring with efficacy, as needed or desired.

The upper mount 504 is configured to preferably include a mounting portion 508 which is configured to secure the vehicle step 500 to a vehicle. In the particular embodiment of the retractable vehicle step 500 shown in FIGS. 13-19, the upper mount 504 is preferably a U-shaped mount which comprises pivotal connections P1 and P2. The pivotal connections P1 and P2 are preferably configured to pivotally connect the arms 506 to the upper mount 504. The upper mount 504 further includes a backing member 510 which is configured to include a plurality of mounting holes 512 which may be sized and shaped to receive fasteners to secure the upper mount 504 to a vehicle.

In some embodiments, biasing member or spring 507 engages a lower portion of upper mount 504 and is held in place at least at the end engaging the upper mount 504. For example, the spring 507 may rest in a cavity 509 formed in upper mount 504 such that an upper portion of spring 507 is enclosed within the cavity 509 and a lower portion of the spring 507 is outside of the cavity 509. The upper portion of the spring 507 is substantially prevented from moving along the X and Y directions as the stepping member 502 is moved from the retracted to the extended positions. The lower portion of the spring 507 outside of the cavity is not directly restrained by the cavity 509 and is thereby allowed to move along the X and Y directions as the stepping member 502 moves from the retracted position to the extended portion. The lower portion of the spring 507 may engage a spring mount 511 to facilitate rotational attachment to the arms 506 described in greater detail below. Spring mount 511 permits the lower portion of the spring 507 to move with respect to the upper portion of the spring 507 and the arms 506. In some embodiments, the cavity may be configured to enclose the entire spring 507 with an upper-most portion of the cavity configured to restrain an upper portion of the spring 507 from moving while a lower portion of the cavity allows movement of a lower portion of the spring 507. In some embodiments, some or all of the spring 507 may be engaged with a cylinder extending downward from a lower portion of the upper mount 504. The cylinder may function in a similar manner as the cavity described above, preventing a portion of the spring 507 from moving in the X and Y directions while allowing another portion to move in those directions as the stepping member 502 is moved from the retracted to the extended positions.

Although the embodiment of the retractable vehicle step shown in FIGS. 13-19 has been shown with an upper mount 504 which is configured to be mountable to a vehicle, other embodiments of the retractable vehicle step may mount differently to a vehicle. One such example is that the connecting arms 506 of the retractable vehicle step 500 may be directly mounted to a vehicle frame member or members so as to eliminate the need for a separate mounting member 504. Another alternate mounting method may include a sub frame to be mounted to a vehicle frame and the upper mount may then mount to the sub frame. One such subframe may include the upper mount 504 to be made of multiple pieces of which one or more of the pieces may be configured to be an adapter to mount the upper mount to a variety of various frames of different vehicles.

With continued reference to FIGS. 13-19, the retractable vehicle step 500 further includes arms 506. The arms 506 further include a first arm 514 and a second arm 516. The arm 514 is preferably secured by pivotal connection P1 to the upper mount 504 and is secured to a step bracket 518 at pivotal mount P3. The arm 516 is preferably secured to the upper mount 504 at pivotal mount P2 and is secured to the step bracket 518 at pivotal connection P4. The arms 514 and 516 are preferably configured to rotate in a substantially clockwise direction relative to FIGS. 16 and 16d so as to move the stepping member 502 from a retracted position to an extended position. Oppositely, the arms 514 and 516 are configured to move in a substantially counterclockwise direction relative to FIGS. 16 and 16d when the retractable vehicle step moves form an extended to a retracted position. The lengths and mounting positions of the connecting arms 506 are preferably sized and shaped so as to move the stepping member 502 upwards and outboard when the retractable vehicle step 500 is moved from a retracted position to an extended position.

With continued reference to FIGS. 13-19, the connecting arm 514 may further include two recesses 513 and 515 which are configured to receive biasing members (not shown). The biasing members (not shown) are preferably configured to cushion the potential contact between the arms 514 and 516 when the vehicle step 500 in retracted or extended position. The biasing member (not shown) to be located in the recess 513 is configured to cushion the potential contact between the arms 514 and 516 when the vehicle step 500 is in a retracted position and the biasing member (not shown) to be located in the recess 515 is configured to cushion the potential contact between the arms 514 and 516 when the vehicle step 500 is in an extended position. Furthermore, the biasing members may assist the biasing member 507 when the retractable vehicle step 500 is moved from a retracted position shown in FIG. 16 to an extended position shown in FIG. 16d.

With continued reference to FIGS. 13-19, the step bracket 518 is preferably connected to the arms 506 at pivotal mount P4 and pivotal mount P3. The step bracket 518 is further configured to receive a stepping member 502. The stepping member 502 and the step bracket 518 in some embodiments may be secured to one another by fasteners so as to create a connection that may support the weight of a person stepping on the retractable vehicle step 500. With continued reference to FIGS. 13-19 the stepping member 502 in some embodiments is a substantially planar member which is configured to provide sufficient space for a person to place at least one foot on the stepping member 502. Although in FIGS. 13-19 the stepping member 502 is a substantially planar member which may support an entire foot, in some embodiments the retractable vehicle step 500 may include a stepping member 502 which is substantially smaller such as a foot peg or bar. In the particular embodiment shown in FIGS. 13-19, the stepping member 502 is an extruded metallic member with a groove 520 which is configured to facilitate mounting of the stepping member 502 to the step bracket 518. Furthermore the stepping member 502 in some embodiments may include gripping ridges 522 which are configured to provide a substantially slip resistant stepping surface.

With reference to the motion of the retractable vehicle step 500 as shown from FIG. 16 to FIG. 16d, the motion preferably operates as follows. When in the retracted position as shown in FIG. 16, the stepping member 502 is an elevated position so that the stepping member is retracted inboard and at least partially above a lower edge 457 of the body panel 456. In this position, a biasing mechanism 519 including a biasing member 507, assists in biasing the stepping member 502 to the retracted position. Furthermore, in the retracted position shown in FIG. 16, the stepping member is positioned such that a distal tip 503 is preferably located below a rearward end 505 of the stepping member 502. One advantage of the retracted position shown in FIG. 16 is that the stepping member 502 is tilted at such an angle that likelihood of debris build up such as rain, dirt, or mud is reduced. That is downward titling angle of the stepping member 502 assists in reducing debris build up.

In the position shown in FIG. 16a, an actuator (not shown) has moved the connecting arms 506 in a clockwise direction so the stepping member 502 has moved to a lower position relative to the retracted position. In this position the biasing member is still biasing the retractable vehicle step to a retracted position and the actuator (not shown) is continuing to move the stepping member 502 outboard of the body panel 456.

In the position shown in FIG. 16b, the actuator has continued to move the arms 506 in a clockwise direction and the stepping member 502 is at least partially outboard of the body panel 456. In the position shown in FIG. 16b, in some embodiments the biasing member 507 has preferably passed an inflection point, in which the biasing member 507 is typically in its maximum position of compression, and the biasing member 507 now assists the vehicle step 500 towards an extended position.

In the two positions shown in FIG. 16c, the vehicle step 500 is shown in a fully extended position in phantom line and in a position just before being fully extended in solid line. In both positions shown in FIG. 16c, the stepping member 502 is substantially outboard of the body panel 456 so as to provide access to a user for stepping. Also, in the positions show in FIG. 16c, in some embodiments the biasing member 507 is assisting in placing the vehicle step 500 into an extended position. From the position shown in solid line to the final extended position shown in phantom line, the stepping member 502 is moved by the connecting arms 506 in such a way as to move the distal tip 503 of the stepping member 502 downward.

In the position shown in FIG. 16d, the vehicle step 500 is in a self-energized position so that when a person steps on the stepping member 502 the vehicle step does not load in such a way to bias the vehicle step 500 in a retracted position. That is, by stepping on the stepping member 502 the vehicle step will be substantially locked by the arms 506 so as to bias the vehicle step 500 to an open position.

With returning reference to FIGS. 13-19, the retractable vehicle step 500 in some embodiments may be used adjacent to a forward side panel 456 of the vehicle 450. The retractable vehicle step 500 is preferably configured to move to an extended position as shown in FIG. 14 and FIG. 16a so as to provide a stepping surface for a person to step on to gain an elevational advantage to access an item in the bed 458 of the truck 450. That is, the retractable vehicle step 500 is configured to move from a lowered position to a heightened position so that a person may step up and reach into the bed 458 of the truck 450.

With continued reference to FIGS. 13-19, when the retractable vehicle step 500 moves from a retracted position to an extended position the stepping member 502 of the retractable vehicle step 500 is advantageous in that it may allow a person to step onto the stepping member 502 so as to substantially raise one's body to easily access items which may reside in the cargo bed 458 of the truck 450. Furthermore the extended position of the stepping member 502 of the retractable vehicle step 500 allows a user to step up and to place oneself in an advantageous position so as to lift items up and out of the cargo bed 458 of the truck 450. Although the embodiment of the retractable vehicle step 500 shown in FIGS. 13-19 illustrates a retractable vehicle step to be mounted to a forward portion 456 of a vehicle cargo bed 458, the retractable vehicle step 500 may be used in other locations or vehicle applications which may benefit from providing an elevated stepping position to a person. Such other mounting configurations of the retractable vehicle step 500 may include the retractable vehicle step 500 being mounted on a cargo van so as to provide a substantially elevated stepping position for a person to access items on the roof of a cargo van. Another example of a suitable application for the retractable vehicle step 500 is to mount the retractable vehicle step 500 to a utility truck with an elevated utility rack in which a user may benefit from having an elevated stepping position to access items in a raised utility rack.

With reference to the actuation of the retractable vehicle step 500, any suitable actuation method may be used. One such suitable actuation method may be to couple the actuation of the retractable vehicle step 500 to the opening and closing of a vehicle door. In such a configuration, the retractable vehicle step may reside in a retracted position when the vehicle door is closed and may extend to an extended position when the vehicle door is opened. Furthermore, another suitable actuation method may include a switch or lever being mounted to the outside or inside of a vehicle so that a user may actuate a switch when the user desires to extend the retractable vehicle step 500. Such a lever or actuation switch may be mounted to a body panel of a vehicle in the passenger space of a vehicle or in the cargo space of a vehicle. As described in greater detail below with respect to FIGS. 20 and 21, the vehicle step 500 may be configured to be operated by the foot or other appendage of a user.

With reference to FIGS. 20 and 21 another embodiment of a retractable vehicle step is illustrated. The retractable vehicle step 700 is configured to be mounted to a vehicle such as the truck 650 shown in FIGS. 20 and 21. The retractable vehicle step 700 is further configured to have a first position and a second position. The first position comprises the vehicle step 700 in a retracted position and the second position comprises the vehicle step 700 to be in an extended position. In the retracted position as shown in FIG. 20, the retractable vehicle step 700 is preferably located in an in-board position relative to the side of the vehicle 650 and, in the extended position, as shown in FIG. 21 the retractable vehicle step 700 is in a substantially outboard position relative to the side of vehicle 650.

In some embodiments, the retractable vehicle step 700 can be positioned so that in a retracted position the vehicle step 700 resides substantially behind a portion of a vehicle body 656. That is the retractable vehicle step 700 is configured to retract behind the vehicle body 656 when in a retracted position so as to be unobtrusive. When the retractable vehicle step 700 transitions from a retracted position as shown in FIG. 20 to an extended position as shown in FIG. 21, in some embodiments the stepping member 702 of the retractable vehicle step 700 moves such that the stepping member 702 moves from a lower position to a raised position.

In some embodiments, the retractable vehicle step 700 preferably includes an upper mount 704, a stepping member 702 and connecting arms 706. Furthermore, the retractable vehicle step 700 preferably includes a biasing mechanism 719 including a biasing member 707, which in some embodiments may be substantially similar to the biasing member 507 of the embodiment of the retractable vehicle step 500 shown in FIG. 16 and described above.

The upper mount 704 is configured to preferably include a mounting portion 708 which is configured to secure the vehicle step 700 to a vehicle. In the particular embodiment of the retractable vehicle step 700 shown in FIGS. 20 and 21, the upper mount 704 is preferably a U-shaped mount which comprises pivotal connections P1′ and P2′. The pivotal connections P1′ and P2′ are preferably configured to pivotally connect the arms 706 to the upper mount 704. In some embodiments, the mounting portion 708 includes multiple components to facilitate the attachment of the vehicle step 700 to one or more different vehicles.

With continued reference to FIGS. 20 and 21, the retractable vehicle step 700 further includes arms 706. The arms 706 further include a first arm 714 and a second arm 716. The arm 714 is preferably secured by pivotal connection P1′ to the upper mount 704 and is secured to a step bracket 718 at pivotal mount P3′. The arm 716 is preferably secured to the upper mount 704 at pivotal mount P2′ and is secured to the step bracket 718 at pivotal connection P4′. The lengths and mounting positions of the connecting arms 706 are preferably sized and shaped so as to move the stepping member 702 upwards and outboard when the retractable vehicle step 700 is moved from a retracted position to an extended position.

In some embodiments, it is advantageous to configure the vehicle step 700 such that in the retracted position, the stepping surface 722 of the stepping member 702 is at an angle to the horizontal. In the illustrated embodiment, the pivotal mount P1′ is positioned slightly above and distal relative to the pivotal mount P2′. The positions of the pivotal mounts P1′, P2′ combined with the step bracket 718 including angled portion 719 facilitates positioning the stepping member 722 at an angle when in the retracted position.

With continued reference to FIGS. 20 and 21, the step bracket 718 is preferably connected to the arms 706 at pivotal mount P4′ and pivotal mount P3′. The step bracket 718 is further configured to receive a stepping member 702. The stepping member 702 and the step bracket 718 in some embodiments may be secured to one another by fasteners so as to create a connection that may support the weight of a person stepping on the retractable vehicle step 700. The stepping member 702 may be configured as described above with respect to the stepping member 502 of FIGS. 13-19. Similarly, the vehicle step 700 may include the features described above with respect to the vehicle step 500, for example, the vehicle step 700 may be self-energized or locked when in the extended position. In addition, it may be operated by the foot or other appendage of a user as described in greater detail below.

In some embodiments, the retractable vehicle step is advantageously configured to permit manually operated retraction and extension. Manual operation may minimize the expense of manufacture and/or installation. In some embodiments, the retractable step is particularly configured to be moved between its retracted and extended positions by foot operation of a user. Advantageously, the vehicle step includes a mechanism to facilitate this operation. For example, in the embodiment shown in FIGS. 20 and 21, the vehicle step 700 includes biasing member 707, for example a spring. In the retracted position, shown in FIG. 20, biasing member 707 biases the stepping member 702 in the retracted position. The biasing member 707 compresses as the stepping member 702 is pulled outwards toward the extended position, thereby providing resistance to the movement outwards. As the stepping member 702 continues to move outwards, the biasing member 707 passes its inflection point and begins to expand rather than compress. The expansion of the biasing member 707 assists the continued extension of the stepping member 702. As described above with respect to the other embodiments, in the extended position, the vehicle step 700 may be self-energized or locked to prevent accidental retraction when weight is applied to the extended step.

To return a self-energized step to the retracted position, the stepping member 702 is partially lifted when in the extended position and pushed toward the vehicle and into the retracted position. The biasing member 707 again resists this movement inwards, for example, by compressing as the stepping member 702 moves inwards. If the vehicle step 700 is not self-energized, step may be moved toward the retracted position simply by pushing the step toward the retracted position. The resistance of the biasing member 707 to this movement helps resist unintended movement of the step 700 toward the retracted position when in use.

When the biasing member 707 passes its inflection point, it assists in the movement inwards and biases the stepping member 702 into the retracted position. In some embodiments, the biasing forces of the biasing member 707 are advantageously configured to allow the vehicle step 700 to be retracted and extended by the foot of a user, rather than a hand operated handle or lever or an automated system. In some embodiments, the vehicle step 700 is moved to the extended position by a user who hooks her foot onto the stepping member 702 and pulls it outwards toward the extended position. In some embodiments, an engagement portion may be provided on the step to facilitate the hooking of the foot. For example, a cavity on the underside of the step may be provided.

In some embodiments, biasing member or spring 707 engages a lower portion of upper mount 704 and is held in place at least at the end engaging the upper mount 704. For example, the spring 707 may rest in a cavity formed in upper mount 704 such that an upper portion of spring 707 is enclosed within the cavity and a lower portion of the spring 707 is outside of the cavity. The upper portion of the spring 707 is substantially prevented from moving along the X and Y directions as the stepping member 702 is moved from the retracted to the extended positions. The lower portion of the spring 707 outside of the cavity is not directly restrained by the cavity and is thereby allowed to move along the X and Y directions as the stepping member 702 moves from the retracted position to the extended portion. The lower portion of the spring 707 may engage a spring mount to facilitate rotational attachment to the arms as described above with respect to the embodiment shown in FIGS. 13-19. In some embodiments, the cavity encloses the entire spring 707 with an upper-most portion configured to restrain an upper portion of the spring 707 from moving while a lower portion of the cavity allows movement of a lower portion of the spring 707. In some embodiments, some or all of the spring 707 may be engaged with a cylinder extending downward from a lower portion of the upper mount 704. The cylinder may function in a similar manner as the cavity described above, preventing a portion of the spring 707 from moving in the X and Y directions while allowing another portion to move in those directions as the stepping member 702 is moved from the retracted to the extended positions.

The methods which are described and illustrated herein are not limited to the sequence of acts described, nor are they necessarily limited to the practice of all of the acts set forth. Other sequences of acts, or less than all of the acts, or simultaneous occurrence of the acts, may be utilized in practicing embodiments of the invention.

Accordingly, it will be appreciated that there is disclosed a retractable step or step assist designed to be mounted to a vehicle. The step assist desirably includes a first support arm, a second support arm and a step member. The step member desirably includes an upper stepping surface defining a support plane, the first support arm and the second support arm connected to the step member so that the first support arm and the second support arm are pivotable with respect to the step member about a third axis and a fourth axis, respectively. The first support arm and the second support arm allow the step member to move between a retracted position and a deployed position outward from the retracted position.

In some embodiments, when the step member is in the deployed position, the arms and step member act to self-energize the step assist. In some embodiments, the step assist is not self-energized when in the retracted position, but may be held in place by a biasing member or cam assembly.

In some embodiments, the step member is angled with respect to the horizontal when in a retracted position. In some embodiments, the step member is angled downward in an outboard direction when the step assist is in a retracted position. In some embodiments, the outboard end of the stepping surface may be vertically spaced no more than approximately ½ inch, no more than approximately 1 inch, no more than approximately 2 inches, no more than approximately 3 inches, or no more than approximately 4 inches below the bottom edge of the vehicle bumper/panel when the step assist is in a retracted position. In some embodiments, the bottom of the stepping member may be vertically spaced no more than approximately ½ inch, no more than approximately 1 inch, no more than approximately 2 inches, no more than approximately 3 inches, or no more than approximately 4 inches below the bumper/panel of the vehicle when in a retracted position. In some embodiments, the top of the stepping surface may be vertically spaced at least approximately ½ inch, at least approximately 1 inch, at least approximately 2 inches, at least approximately 3 inches, or at least approximately 4 inches below the bumper/panel of the vehicle when in a deployed position. In some embodiments, the stepping member will extend no more than approximately 12 inches, no more than approximately 8 inches, or no more than approximately 6 inches below the bumper/panel. In some embodiments, the arms of the step assist contact each other when the step assist is in a deployed position. In some embodiments, a biasing member serves to hold the step assist in a retracted position and upon movement of the step assist from the retracted position, the biasing member helps to deploy the step assist.

Unless otherwise stated, it is to be understood that any range of values disclosed, taught or suggested herein comprises all values and sub-ranges therebetween. For example, a range from 1 to 100 will comprise all integer and non-integer numerical values between 1 and 100; and all sub-ranges between 1 and 100 including all integer and non-integer numerical values of the range limits and numbers therebetween.

From the foregoing description, it will be appreciated that a novel approach for providing and using a retractable vehicle step assist with enhanced clearance features has been disclosed. While the components, techniques and aspects of the invention have been described with a certain degree of particularity, it is manifest that many changes may be made in the specific designs, constructions and methodology herein above described without departing from the spirit and scope of this disclosure.

While a number of preferred embodiments of the invention and variations thereof have been described in detail, other modifications and methods of using, and other vehicular, automobile and/or mechanical applications for the same will be apparent to those of skill in the art. Accordingly, it should be understood that various applications, modifications, and substitutions may be made of equivalents.

Various modifications and applications of the invention may occur to those who are skilled in the art, without departing from the true spirit or scope of the invention. It should be understood that the invention is not limited to the embodiments set forth herein for purposes of exemplification.

Claims

1. A retractable vehicle step comprising:

a mounting bracket configured to attach to a vehicle defining a longitudinal axis that is parallel to a horizontal surface when the vehicle is positioned on the horizontal surface;
at least one arm rotatably connected to the mounting bracket on a first end of the at least one arm in a manner that defines a rotation axis that is parallel to the horizontal surface;
a stepping member rotatably connected to the at least one arm on a second end of the at least one arm and configured to translate between an extended position and a stored position, the extended position being outboard of the stored position,
wherein the stepping member is configured to displace both laterally and longitudinally when translating between the extended position and the stored position; and
a motor or solenoid actuator;
wherein the motor or solenoid actuator is configured to translate the retractable vehicle step between the extended position and the stored position automatically upon operation of the vehicle; and
wherein the retractable vehicle step is configured such that the stepping member is biased toward the extended position when a weight is applied to the stepping member in the extended position.

2. The retractable vehicle step of claim 1, wherein the stepping member comprises a stepping platform and stepping bracket.

3. The retractable vehicle step of claim 2, wherein the stepping bracket is curved.

4. The retractable vehicle step of claim 1, wherein the retractable vehicle step comprises two arms, each of which is independently and rotatably attached to the stepping member and the mounting bracket.

5. The retractable vehicle step of claim 4, wherein the two arms are complementary to each other.

6. The retractable vehicle step of claim 1, wherein the stepping member is configured to displace laterally by at least 2 inches when translating between the extended position and the stored position.

7. The retractable vehicle step of claim 1, wherein the stepping member is configured to translate downwards and outboard when translating between the stored position and the extended position.

8. The retractable vehicle step of claim 1, further comprising a biasing mechanism.

9. The retractable vehicle step of claim 1, wherein the operation of the vehicle comprises turning on an ignition switch of the vehicle.

10. The retractable vehicle step of claim 1, wherein the motor or solenoid actuator is configured to translate the retractable vehicle step through the use of a gas spring.

11. The retractable vehicle step of claim 1, wherein the stepping member rotates between the retracted position and the extended position.

12. The retractable vehicle step of claim 1, wherein the motor or solenoid actuator is configured to translate the retractable vehicle step from the extended position to the stored position.

13. The retractable vehicle step of claim 1, wherein the operation of the vehicle comprises opening a door of the vehicle.

14. A vehicle comprising:

an operational component; and
a retractable step, the retractable step comprising: a mounting bracket attached to the vehicle; at least one arm rotatably connected to the mounting bracket on a first end of the at least one arm in a manner that defines a rotation axis that is parallel to a horizontal surface when the vehicle is positioned on the horizontal surface; a stepping member rotatably connected to the at least one arm on a second end of the at least one arm and configured to translate between an extended position and a stored position, the extended position being outboard of the stored position, wherein the stepping member is configured to displace both laterally and longitudinally when translating between the extended position and the stored position; and a motor or solenoid actuator; wherein the motor or solenoid actuator is configured to translate the retractable vehicle step between the extended position and the stored position automatically upon activation of the operational component; and wherein the retractable step is configured such that the stepping member is biased toward the extended position when a weight is applied to the stepping member in the extended position.

15. The vehicle of claim 14, wherein the operational component is an ignition switch.

16. The vehicle of claim 14, wherein the motor or solenoid actuator is configured to translate the retractable vehicle step from the extended position to the stored position.

17. The vehicle of claim 14, wherein the stepping member is configured to displace laterally by at least 2 inches when translating between the extended position and the stored position.

18. The vehicle of claim 14, wherein the stepping member is configured to translate downwards and outboard when translating between the stored position and the extended position.

19. The vehicle of claim 14, wherein the retractable vehicle step comprises two arms, each of which is independently and rotatably attached to the stepping member and the mounting bracket.

20. The vehicle of claim 14, wherein the operational component is a door.

Referenced Cited
U.S. Patent Documents
7591 August 1850 Burdett
752031 February 1904 Chadwick
955658 April 1910 Mitchell et al.
1250604 December 1917 Lorenc
1449031 March 1923 Blake
1471972 October 1923 Miller
2041640 May 1936 Goss
2122040 June 1938 Machovec
2125085 July 1938 Pool
2436961 March 1948 Gabriel
2487921 November 1949 Culver
2492068 December 1949 Schofield et al.
2566401 September 1951 Bustin
2575615 November 1951 Crump
2583894 January 1952 Shuck
2669613 February 1954 Despard
2678832 May 1954 Wright
2764422 September 1956 McDonald
2925876 February 1960 Wagner
3039562 June 1962 Wagner
3095216 June 1963 Browne
3172499 March 1965 Stairs
3329443 July 1967 Lowder et al.
3392990 July 1968 Wolf
3488066 January 1970 Hansen
3494634 February 1970 De Paula
3522396 July 1970 Norden
3528574 September 1970 Denner et al.
3572754 March 1971 Fowler
3608957 September 1971 Maneck
3671058 June 1972 Kent
3762742 October 1973 Bucklen
3807757 April 1974 Carpenter et al.
3833240 September 1974 Weiler
3865399 February 1975 Way
3887217 June 1975 Thomas
3889997 June 1975 Schoneck
3891261 June 1975 Finneman
3957284 May 18, 1976 Wright
3961809 June 8, 1976 Clugston
3980319 September 14, 1976 Kirkpatrick
3981515 September 21, 1976 Rosborough
4020920 May 3, 1977 Abbott
4068542 January 17, 1978 Brand et al.
4073502 February 14, 1978 Frank
4089538 May 16, 1978 Eastridge
4106790 August 15, 1978 Weiler
4110673 August 29, 1978 Nagy et al.
4116457 September 26, 1978 Nerem
4164292 August 14, 1979 Karkau
4174021 November 13, 1979 Barlock
4180143 December 25, 1979 Clugston
4185849 January 29, 1980 Jaeger
4188889 February 19, 1980 Favrel
4231583 November 4, 1980 Learn
4312515 January 26, 1982 Allori
4424751 January 10, 1984 Blochlinger
4440364 April 3, 1984 Cone et al.
4462486 July 31, 1984 Dignan
4536004 August 20, 1985 Brynielsson et al.
4542805 September 24, 1985 Hamlin et al.
4570962 February 18, 1986 Chavira
4623160 November 18, 1986 Trudell
D287001 December 2, 1986 Jarvie et al.
4679810 July 14, 1987 Kimball
D292904 November 24, 1987 Bielby
4720116 January 19, 1988 Williams et al.
4733752 March 29, 1988 Sklar
4909700 March 20, 1990 Fontecchio et al.
4982974 January 8, 1991 Guidry
5005667 April 9, 1991 Anderson
5005850 April 9, 1991 Baughman
5039119 August 13, 1991 Baughman
5085450 February 4, 1992 DeHart, Sr.
5137294 August 11, 1992 Martin
5154125 October 13, 1992 Renner et al.
5195609 March 23, 1993 Ham et al.
5199731 April 6, 1993 Martin
5228707 July 20, 1993 Yoder
5228761 July 20, 1993 Huebschen et al.
5238300 August 24, 1993 Slivon
D340905 November 2, 1993 Orth et al.
5257847 November 2, 1993 Yonehara
5284349 February 8, 1994 Bruns et al.
5286049 February 15, 1994 Khan
5342073 August 30, 1994 Poole
5358268 October 25, 1994 Hawkins
5375864 December 27, 1994 McDaniel
5423463 June 13, 1995 Weeks
5439342 August 8, 1995 Hall et al.
5462302 October 31, 1995 Leitner
5478124 December 26, 1995 Warrington
5498012 March 12, 1996 McDaniel
5501475 March 26, 1996 Bundy
5505476 April 9, 1996 Maccabee
5513866 May 7, 1996 Sisson
5538100 July 23, 1996 Hedley
5538265 July 23, 1996 Chen et al.
5538269 July 23, 1996 McDaniel
5547040 August 20, 1996 Hansen
5584493 December 17, 1996 Demski et al.
5601300 February 11, 1997 Fink et al.
5697623 December 16, 1997 Bermes et al.
5697626 December 16, 1997 McDaniel
5727840 March 17, 1998 Ochiai et al.
5779208 July 14, 1998 McGraw
5842709 December 1, 1998 Maccabee
5897125 April 27, 1999 Bundy
5941342 August 24, 1999 Lee
5957237 September 28, 1999 Tigner
6042052 March 28, 2000 Smith et al.
6055780 May 2, 2000 Yamazaki
6082751 July 4, 2000 Hanes et al.
6112152 August 29, 2000 Tuttle
6149172 November 21, 2000 Pascoe
6168176 January 2, 2001 Mueller
6179312 January 30, 2001 Paschke et al.
6203040 March 20, 2001 Hutchins
6213486 April 10, 2001 Kunz et al.
6264222 July 24, 2001 Johnston et al.
6270099 August 7, 2001 Farkash
6325397 December 4, 2001 Pascoe
6352295 March 5, 2002 Leitner
6375207 April 23, 2002 Dean et al.
6412799 July 2, 2002 Schrempf
6422342 July 23, 2002 Armstrong et al.
6425572 July 30, 2002 Lehr
6430164 August 6, 2002 Jones et al.
6435534 August 20, 2002 Stone
6439342 August 27, 2002 Boykin
6460915 October 8, 2002 Bedi et al.
6511086 January 28, 2003 Schlicht
6513821 February 4, 2003 Heil
6533303 March 18, 2003 Watson
6588783 July 8, 2003 Fichter
6641158 November 4, 2003 Leitner
6659484 December 9, 2003 Knodle et al.
6663125 December 16, 2003 Cheng
6746033 June 8, 2004 McDaniel
6769704 August 3, 2004 Cipolla
6810995 November 2, 2004 Warford
6812466 November 2, 2004 O'Connor et al.
6830257 December 14, 2004 Leitner
6834875 December 28, 2004 Leitner
6840526 January 11, 2005 Anderson et al.
6874801 April 5, 2005 Fichter
6880843 April 19, 2005 Greer, Jr.
6912912 July 5, 2005 Reichinger et al.
6918624 July 19, 2005 Miller et al.
6926295 August 9, 2005 Berkebile et al.
6938909 September 6, 2005 Leitner
6942233 September 13, 2005 Leitner et al.
6942272 September 13, 2005 Livingston
6948903 September 27, 2005 Ablabutyan et al.
6951357 October 4, 2005 Armstrong et al.
6955370 October 18, 2005 Fabiano et al.
6959937 November 1, 2005 Schneider et al.
6966597 November 22, 2005 Tegtmeier
6971652 December 6, 2005 Bobbert et al.
6997469 February 14, 2006 Lanoue et al.
7000932 February 21, 2006 Heil et al.
7007961 March 7, 2006 Leitner
7017927 March 28, 2006 Henderson et al.
7055839 June 6, 2006 Leitner
7070194 July 4, 2006 Garland et al.
7090276 August 15, 2006 Bruford et al.
7111858 September 26, 2006 Manser et al.
7111859 September 26, 2006 Kim et al.
7118120 October 10, 2006 Lee et al.
7118150 October 10, 2006 Bruford et al.
7163221 January 16, 2007 Leitner
7185904 March 6, 2007 Jones
7219911 May 22, 2007 Sukonthapanich et al.
7258386 August 21, 2007 Leitner
7287770 October 30, 2007 Drabant et al.
7287771 October 30, 2007 Lee et al.
7311320 December 25, 2007 Kuntze et al.
7318596 January 15, 2008 Scheuring, III et al.
7360779 April 22, 2008 Crandall
7367574 May 6, 2008 Leitner
7377531 May 27, 2008 Fabiano et al.
7380807 June 3, 2008 Leitner
7398985 July 15, 2008 Leitner et al.
7413204 August 19, 2008 Leitner
7413205 August 19, 2008 Watson
7416202 August 26, 2008 Fichter
7434825 October 14, 2008 Williams
7438305 October 21, 2008 Schulz
7441790 October 28, 2008 Lechkun
7445221 November 4, 2008 Kobayashi
7469916 December 30, 2008 Watson
7487986 February 10, 2009 Leither et al.
7513520 April 7, 2009 Okuyama
7516703 April 14, 2009 Tazreiter
7530619 May 12, 2009 Bruford et al.
7566064 July 28, 2009 Leitner et al.
7584975 September 8, 2009 Leitner
7585033 September 8, 2009 Holt
7594672 September 29, 2009 Piotrowski
7635247 December 22, 2009 Collins
7637519 December 29, 2009 Leitner et al.
7712755 May 11, 2010 Yang et al.
7717444 May 18, 2010 Fichter
7740260 June 22, 2010 VanBelle et al.
7740261 June 22, 2010 Leitner et al.
7793596 September 14, 2010 Hirtenlehner
7823896 November 2, 2010 VanBelle
7874565 January 25, 2011 Duncan
7900944 March 8, 2011 Watson
7909344 March 22, 2011 Bundy
7976042 July 12, 2011 Watson et al.
8056913 November 15, 2011 Kuntze et al.
8070173 December 6, 2011 Watson
8157277 April 17, 2012 Leitner et al.
8360455 January 29, 2013 Leitner et al.
8382132 February 26, 2013 Kowalski
8408571 April 2, 2013 Leitner et al.
8419034 April 16, 2013 Leitner et al.
8602431 December 10, 2013 May
8662512 March 4, 2014 May
8827293 September 9, 2014 Bundy
8827294 September 9, 2014 Leitner et al.
8844957 September 30, 2014 Leitner et al.
D720674 January 6, 2015 Stanesic et al.
8936266 January 20, 2015 Leitner et al.
8944451 February 3, 2015 Leitner et al.
8985606 March 24, 2015 Fichter
9156406 October 13, 2015 Stanesic et al.
9272667 March 1, 2016 Smith
9302626 April 5, 2016 Leitner et al.
9308870 April 12, 2016 Yang
9346404 May 24, 2016 Bundy
9346405 May 24, 2016 Leitner et al.
9511717 December 6, 2016 Smith
9522634 December 20, 2016 Smith
9527449 December 27, 2016 Smith
9550458 January 24, 2017 Smith et al.
9561751 February 7, 2017 Leitner et al.
9656609 May 23, 2017 Du et al.
9669766 June 6, 2017 Du et al.
9669767 June 6, 2017 Du et al.
9688205 June 27, 2017 Du et al.
9701249 July 11, 2017 Leitner et al.
9809172 November 7, 2017 Stanesic et al.
9944231 April 17, 2018 Leitner et al.
10053017 August 21, 2018 Leitner et al.
10065486 September 4, 2018 Smith et al.
10077016 September 18, 2018 Smith et al.
10081302 September 25, 2018 Frederick et al.
10106069 October 23, 2018 Rasekhi
10106086 October 23, 2018 Eckstein et al.
10106087 October 23, 2018 Stojkovic et al.
10106088 October 23, 2018 Smith
10118557 November 6, 2018 Pribisic
10124839 November 13, 2018 Povinelli et al.
10144345 December 4, 2018 Stinson et al.
10150419 December 11, 2018 Derbis et al.
10183624 January 22, 2019 Leitner et al.
20020109446 August 15, 2002 Arnold
20020113400 August 22, 2002 Leitner
20020130531 September 19, 2002 Leitner
20020153201 October 24, 2002 Warford
20030011164 January 16, 2003 Cipolla
20030038446 February 27, 2003 Anderson et al.
20030090081 May 15, 2003 Oakley
20030094781 May 22, 2003 Jaramillo et al.
20030132595 July 17, 2003 Fabiano
20030184040 October 2, 2003 Leitner
20030200700 October 30, 2003 Leitner
20040084868 May 6, 2004 Leitner et al.
20040100063 May 27, 2004 Henderson et al.
20040108678 June 10, 2004 Berkebile et al.
20040124601 July 1, 2004 Leitner
20040135339 July 15, 2004 Kim
20040164580 August 26, 2004 Armstrong et al.
20040207224 October 21, 2004 Miller et al.
20050006870 January 13, 2005 Williarns
20050035568 February 17, 2005 Lee et al.
20050087951 April 28, 2005 Leitner
20050104318 May 19, 2005 Lee et al.
20050117969 June 2, 2005 Byrne
20050146157 July 7, 2005 Leitner
20050151340 July 14, 2005 Leitner
20050167941 August 4, 2005 Garland et al.
20050173886 August 11, 2005 Leitner
20050179227 August 18, 2005 Leitner
20050258616 November 24, 2005 Scheuring, III et al.
20050263974 December 1, 2005 Mulder
20050280242 December 22, 2005 Fabiano et al.
20060082096 April 20, 2006 Sukonthapanich et al.
20060091638 May 4, 2006 Leitner et al.
20060163836 July 27, 2006 Kobayashi
20060208449 September 21, 2006 Kuo et al.
20060214386 September 28, 2006 Watson
20060284440 December 21, 2006 Leitner
20070012498 January 18, 2007 Schulz
20070017743 January 25, 2007 Yeh
20080034552 February 14, 2008 Nguyen
20080042396 February 21, 2008 Watson et al.
20080084045 April 10, 2008 Filias et al.
20080100024 May 1, 2008 Leitner et al.
20080100025 May 1, 2008 Leitner et al.
20090008894 January 8, 2009 Kuntze et al.
20090072507 March 19, 2009 Storer
20090308688 December 17, 2009 Tayar
20100176607 July 15, 2010 Hardy et al.
20100237581 September 23, 2010 Leitner et al.
20110115187 May 19, 2011 Leitner et al.
20120025485 February 2, 2012 Yang et al.
20150321612 November 12, 2015 Leitner et al.
20150321613 November 12, 2015 Leitner et al.
20160193964 July 7, 2016 Stanesic et al.
20160288718 October 6, 2016 Hayes et al.
20170008459 January 12, 2017 Leitner et al.
20170036607 February 9, 2017 Du et al.
20170144606 May 25, 2017 Smith
20170190308 July 6, 2017 Smith
20170246993 August 31, 2017 Smith
20170267182 September 21, 2017 Leitner
20180141497 May 24, 2018 Smith
20180201194 July 19, 2018 Stanesic
20180257572 September 13, 2018 Du et al.
20180281687 October 4, 2018 Derbis et al.
20180326911 November 15, 2018 Leither
Foreign Patent Documents
2 082 177 May 1994 CA
2 332 193 September 2001 CA
2 370 618 January 2007 CA
ZL93247906.6 June 1994 CN
31 51 621 July 1983 DE
39 32 142 April 1990 DE
8910933 October 1990 DE
0 066 493 December 1982 EP
1 116 840 July 2001 EP
3 002 157 April 2016 EP
1 350 593 December 1963 FR
2 225 612 August 1974 FR
934387 August 1963 GB
936846 September 1963 GB
2 045 699 November 1980 GB
2 129 378 May 1984 GB
2 201 511 September 1988 GB
2 288 014 October 1994 GB
201741011829 October 2018 IN
63-255144 October 1988 JP
4-339040 November 1992 JP
04-342629 November 1992 JP
05-310061 November 1993 JP
05-310081 November 1993 JP
8-132967 May 1996 JP
4-339041 October 2009 JP
2018-177089 November 2018 JP
403594 November 1972 SU
M296187 August 2006 TW
WO 2001/000441 January 2001 WO
WO 2003/039910 May 2003 WO
WO 2003/039920 May 2003 WO
WO 2003/066380 August 2003 WO
WO 2003/069294 August 2003 WO
WO 2006/050297 May 2006 WO
WO 2009/103163 August 2009 WO
WO 2018/197393 November 2018 WO
Other references
  • Canadian Office Action, re CA Application No. 2,666,495, dated Aug. 27, 2013 in 2 pages.
  • Canadian Office Action, re CA Application No. 2,666,495, dated Jul. 11, 2014 in 2 pages.
  • International Search Report re PCT Application No. PCT/US2007/082572, dated Apr. 3, 2008 in 9 pages.
  • US. District Court, Central District of California, Complaint dated Mar. 25, 2008, Case #:SACV08-00323 CJC (RNBX).
  • US. District Court, Central District of California, Docket printed Dec. 3, 2008, Case #2 SACV08-00323 CJC (RNBX).
  • Patent Owner Preliminary Response, Case No. IPR2018-01637, U.S. Pat. No. 9,302,626, filed Dec. 18, 2018.
  • Patent Owner Preliminary Response, Case No. IPR2018-01636, U.S. Pat. No. 9,561,751, filed Jan. 25, 2019.
  • Patent Owner Preliminary Response, Case No. IPR2019-00503, U.S. Pat. No. 10,053,017, filed Feb. 4, 2019.
  • Final Consent Judgment and Permanent Injunction; United States District Court—Central District of California; Case No. 8:08-cv-00323; 89908 Inc., d/b/a AMP Research v. T-Max, LLC et al.; filed Dec. 23, 2008.
  • Complaint for Patent and Copyright Infringement; United States District Court—Central District of California; Case No. 8:17-cv-01914; Lund Motion Products, Inc. v. T-Max (Hangzhou) Technology Co., Ltd., et al.; filed Oct. 31, 2017.
  • Defendants T-Max (Hangzhou) Technology Co., Ltd.'s and T-Max Industrial (H.K.) Co., Ltd.'s Answer, Affirmative Defenses, and Counterclaims; United States District Court—Central District of California; Case No. 8:17-cv-01914; Lund Motion Products, Inc. v. T-Max (Hangzhou) Technology Co., Ltd., et al.; filed Dec. 21, 2017.
  • Memorandum in Support of Plaintiff's Motion to Dismiss Defendants' Inequitable Conduct Counterclaim and to Strike Related Affirmative Defenses; United States District Court—Central District of California; Case No. 8:17-cv-01914; Lund Motion Products, Inc. v. T-Max (Hangzhou) Technology Co., Ltd., et al.; filed Feb. 28, 2018.
  • Defendants T-Max (Hangzhou) Technology Co., Ltd.'s and T-Max Industrial (H.K.) Co., Ltd.'s Opposition to Lund Motion Products, Inc.'s Motion to Dismiss Inequitable Conduct Counterclaim and Motion to Strike Related Affirmative Defenses; United States District Court—Central District of California; Case No. 8:17-cv-01914; Lund Motion Products, Inc. v. T-Max (Hangzhou) Technology Co., Ltd., et al.; filed Mar. 12, 2018.
  • Reply Memorandum in Support of Plaintiff's Motion to Dismiss Defendants' Inequitable Conduct Counterclaim and to Strike Related Affirmative Defenses; United States District Court—Central District of California; Case No. 8:17-cv-01914; Lund Motion Products, Inc. v. T-Max (Hangzhou) Technology Co., Ltd., et al.; filed Mar. 19, 2018.
  • Order Granting Motion to Dismiss Counterclaim With Fourteen Days' Leave to Amend and Denying Without Prejudice Motion to Strike Related Affirmative Defenses; United States District Court—Central District of California; Case No. 8:17-cv-01914; Lund Motion Products, Inc. v. T-Max (Hangzhou) Technology Co., Ltd., et al.; filed Apr. 3, 2018.
  • Defendants T-Max (Hangzhou) Technology Co., Ltd.'s and T-Max Industrial (H.K.) Co., Ltd.'s Second Amended Answer, Affirmative Defenses, and Counterclaims to Plaintiff Lund Motion Products, Inc.'s Complaint for Patent and Copyright Infringement; United States District Court—Central District of California; Case No. 8:17-cv-01914; Lund Motion Products, Inc. v. T-Max (Hangzhou) Technology Co., Ltd., et al.; filed Apr. 17, 2018.
  • Memorandum in Support of Plaintiff's Renewed Motion to Dismiss Defendants' Inequitable Conduct Counterclaim and to Strike Related Affirmative Defenses; United States District Court—Central District of California; Case No. 8:17-cv-01914; Lund Motion Products, Inc. v. T-Max (Hangzhou) Technology Co., Ltd., et al.; filed May 8, 2018.
  • Complaint for Patent Infringement; United States District Court—Western District of Texas; Case No. 5:17-cv-01250; Lund Motion Products, Inc. v. Prestige Off Roads, LLC; filed Dec. 11, 2017.
  • Defendant's Original Answer; United States District Court—Western District of Texas; Case No. 5:17-cv-01250; Lund Motion Products, Inc. v. Prestige Off Roads, LLC; filed Feb. 26, 2018.
  • Complaint for Patent Infringement; United States District Court—Central District of California; Case No. 5:17-cv-00883; Lund Motion Products, Inc. v. Rev Wheel LLC; filed May 8, 2017.
  • Complaint for Patent and Copyright Infringement; U.S. District Court Middle District of Georgia; Case No. 3:17-cv-00155; Lund Motion Products, Inc. v. Rocky Ridge Inc., et al.; filed: Nov. 1, 2017.
  • Answer of Defendants Rocky Ridge, Inc., Rocky Ridge Transport, LLC & A.L.C. Manufacturing, Inc.; U.S. District Court Middle District of Georgia; Case No. 3:17-cv-00155; Lund Motion Products, Inc. v. Rocky Ridge Inc., et al.; filed: Dec. 27, 2017.
  • Declaration of Loni Morrow in Support of Renewed Notice of Motion and Motion to Dismiss Defendants' Inequitable Conduct Counterclaim Notice of Motion and Motion to Strike Related Affirmative Defenses filed by Plaintiff Lund Motion Products, Inc., Counter Defendant Lund Motion Products, Inc. with attachments; United States District Court—Central District of California; Case No. 8:17-cv-01914; Lund Motion Products, Inc. v. T-Max (Hangzhou) Technology Co., Ltd., et al.; filed May 8, 2018.
  • Memorandum in Opposition of Renewed Notice of Motion and Motion to Dismiss Defendants' Inequitable Conduct Counterclaim Notice of Motion and Motion to Strike Related Affirmative Defenses filed by Counter Claimants T-Max Hangzhou Technology Co., Ltd., et al., with attachments; United States District Court—Central District of California; Case No. 8:17-cv-01914; Lund Motion Products, Inc. v. T-Max (Hangzhou) Technology Co., Ltd., et al.; filed May 8, 2018.
  • Plaintiff's First Set of Interrogatories (Nos. 1-21) to T-Max (Hangzhou) Technology, Co., Ltd.; United States District Court—Central District of California; Case No. 8:17-cv-01914; Lund Motion Products, Inc. v. T-Max (Hangzhou) Technology Co., Ltd., et al.; filed May 10, 2018.
  • Plaintiff's First Set of Requests for Production of Documents and Things (Nos. 1-81) to T-Max (Hangzhou) Technology Co., Ltd., et al.; United States District Court—Central District of California; Case No. 8:17-cv-01914; Lund Motion Products, Inc. v. T-Max (Hangzhou) Technology Co., Ltd., et al.; filed May 10, 2018.
  • Defendants T-Max (Hangzhou) Technology Co., Ltd.'s, et al., First Set of Interrogatories to Lund Motion Products, Inc.; United States District Court—Central District of California; Case No. 8:17-cv-01914; Lund Motion Products, Inc. v. T-Max (Hangzhou) Technology Co., Ltd., et al.; filed May 16, 2018.
  • Defendants T-Max (Hangzhou) Technology Co., Ltd.'s, et al., First Set of Requests for Production to Lund Motion Products, Inc.; United States District Court—Central District of California; Case No. 8:17-cv-01914; Lund Motion Products, Inc. v. T-Max (Hangzhou) Technology Co., Ltd., et al.; filed May 16, 2018.
  • Defendants T-Max (Hangzhou) Technology Co., Ltd.'s and T-Max Industrial (H.K.) Co., Ltd.'s Opposition to Lund Motion Products, Inc.'s Renewed Motion to Dismiss Inequitable Conduct Counterclaim and Motion to Strike Affirmative Defenses; United States District Court—Central District of California; Case No. 8:17-cv-01914; Lund Motion Products, Inc. v. T-Max (Hangzhou) Technology Co., Ltd., et al.; filed May 21, 2018.
  • Declaration of Loni Morrow in Support of Renewed Notice of Motion and Motion to Dismiss Defendants' Inequitable Conduct Counterclaim Notice of Motion and Motion to Strike Related Affirmative Defenses, filed by Plaintiff Lund Motion Products, Inc., with attachments; United States District Court—Central District of California; Case No. 8:17-cv-01914; Lund Motion Products, Inc. v. T-Max (Hangzhou) Technology Co., Ltd., et al.; filed May 25, 2018.
  • Reply in Support of Renewed Notice of Motion and Motion to Dismiss Defendants' Inequitable Conduct Counterclaim Notice of Motion and Motion to Strike Related Affirmative Defenses filed by Plaintiff Lund Motion Products, Inc.; United States District Court—Central District of California; Case No. 8:17-cv-01914; Lund Motion Products, Inc. v. T-Max (Hangzhou) Technology Co., Ltd., et al.; filed May 25, 2018.
  • Order by Judge Cormac J. Carney denying Motion to Dismiss and Motion to Strike Related Affirmative Defenses. United States District Court—Central District of California; Case No. 8:17-cv-01914; Lund Motion Products, Inc. v. T-Max (Hangzhou) Technology Co., Ltd., et al.; filed Jun. 5, 2018.
  • Answer to Counterclaim, with Jury Demand filed by Plaintiff/Counter defendant Lund Motion Products, Inc.; United States District Court—Central District of California; Case No. 8:17-cv-01914; Lund Motion Products, Inc. v. T-Max (Hangzhou) Technology Co., Ltd., et al.; filed Jun. 19, 2018.
  • Defendant T-Max (Hangzhou) Technology Co., Ltd.'s Responses and Objections to Plaintiff's First Set of Interrogatories (Nos. 1-21); United States District Court—Central District of California; Case No. 8:17-cv-01914; Lund Motion Products, Inc. v. T-Max (Hangzhou) Technology Co., Ltd., et al.; filed Jun. 25, 2018.
  • Defendants T-Max (Hangzhou) Technology Co., Ltd.'s, et al., Responses and Objections to Plaintiff's First Set of Requests for Production of Documents and Things (Nos. 1-81); United States District Court—Central District of California; Case No. 8:17-cv-01914; Lund Motion Products, Inc. v. T-Max (Hangzhou) Technology Co., Ltd., et al.; filed Jun. 25, 2018.
  • Lund Motion Products, Inc.'s Response to Defendants T-Max (Hangzhou) Technology Co., Ltd.'s, et al., First Set of Interrogatories (Nos. 1-19); United States District Court—Central District of California; Case No. 8:17-cv-01914; Lund Motion Products, Inc. v. T-Max (Hangzhou) Technology Co., Ltd., et al.; filed Jun. 29, 2018.
  • Lund Motion Products, Inc.'s Response to Defendants T-Max (Hangzhou) Technology Co., Ltd.'s, et al., First Set of Requests for Production of Documents (Nos. 1-89); United States District Court—Central District of California; Case No. 8:17-cv-01914; Lund Motion Products, Inc. v. T-Max (Hangzhou) Technology Co., Ltd., et al.; filed Jun. 29, 2018.
  • Petition for Inter Partes Review of U.S. Pat. No. 9,302,626, T-Max (Hangzhou) Technology Co., Ltd. And T-Max Industrial (H.K.) Co. Ltd, Petitioner, v. Lund Motion Products, Inc., Patent Owner, PTAB Case No. IPR2018-01637, dated Sep. 14, 2018.
  • Declaration of Nathan J. Delson, Ph.D. in Support of Petitions for Inter Partes Review of U.S. Pat. Nos. 8,157,277 and 9,302,626 (“Delson Declaration”) (Exhibit 1002 of Petition for Inter Partes Review of U.S. Pat. No. 9,302,626, dated Sep. 14, 2018).
  • Merriam-Webster's Collegiate Dictionary, 10th Ed., Merriam-Webster, Inc. pp. 442, 996, 1057, 1157, 1250 (1993) (Exhibit 1010 of Petition for Inter Partes Review of U.S. Pat. No. 9,302,626, dated Sep. 14, 2018).
  • Prosecution History of U.S. Pat. No. 9,302,626 (Exhibit 1012 of Petition for Inter Partes Review of U.S. Pat. No. 9,302,626, dated Sep. 14, 2018).
  • Petition for Inter Partes Review of U.S. Pat. No. 8,157,277, T-Max (Hangzhou) Technology Co., Ltd. And T-Max Industrial (H.K.) Co. Ltd, Petitioner, v. Lund Motion Products, Inc., Patent Owner, PTAB Case No. IPR2018-01638, dated Sep. 14, 2018.
  • Norton, R.L., “Design of Machinery”, 2nd Ed., McGraw Hill, Inc. (1999) (Exhibit 1008 of Petition for Inter Partes Review of U.S. Pat. No. 8,157,277, dated Sep. 14, 2018).
  • Prosecution History of U.S. Pat. No. 8,157,277 (Exhibit 1013 of Petition for Inter Partes Review of U.S. Pat. No. 8,157,277, dated Sep. 14, 2018).
  • Petition for Inter Partes Review of U.S. Pat. No. 9,561,751, T-Max (Hangzhou) Technology Co., Ltd. And T-Max Industrial (H.K.) Co. Ltd, Petitioner, v. Lund Motion Products, Inc., Patent Owner, PTAB Case No. IPR2018-01636, dated Sep. 18, 2018.
  • Declaration of Nathan J. Delson, Ph.D. in Support of Petitions for Inter Partes Review of U.S. Pat. Nos. 9,561,751 (“Delson Declaration”) which includes statements and analyses on the '751 patent in additional numbered paragraphs after the numbered paragraphs for the entirety of two identical declarations by Dr. Delson in support of Petitioner's two other IPR petitions under IPR2018-01637 on the '626 Patent and IPR2018/01638 on the '277 Patent filed at the PTAB on Sep. 14, 2018 (Exhibit 1002 of Petition for Inter Partes Review of U.S. Pat. No. 9,561,751, dated Sep. 18, 2018).
  • Prosecution History of U.S. Pat. No. 9,561,751 (Exhibit 1011 of Petition for Inter Partes Review of U.S. Pat. No. 9,561,751, dated Sep. 18, 2018).
  • Patent Owner Preliminary Response, Case. No. IPR2018-01638, U.S. Pat. No. 8,157,277, filed on Dec. 18, 2018.
  • Petition for Inter Partes Review of U.S. Pat. No. 10,053,017, T-Max (Hangzhou) Technology Co., Ltd. And T-Max Industrial (H.K.) Co. Ltd, Petitioner v. Lund Motion Products, Inc., Patent Owner, PTAB Case No. IPR2019-00503, dated Dec. 27, 2018.
  • Declaration of Nathan J. Delson, Ph.D., In Support of Petitions for Inter Partes Review of U.S. Pat. No. 10,053,017, PTAB Case No. IPR2019-00503 (Exhibit 1002 of .Petition for Inter Partes Review of U.S. Pat. No. 10,053,017, dated Dec. 27, 2018).
  • Prosecution History of U.S. Patent No. 10,053,017 (Exhibit 1011 of Petition for Inter Partes Review of U.S. Pat. No. 10,053,017, dated Dec. 27, 2018).
Patent History
Patent number: 10493920
Type: Grant
Filed: Jun 30, 2017
Date of Patent: Dec 3, 2019
Patent Publication Number: 20170355315
Assignee: Lund Motion Products, Inc. (Buford, GA)
Inventors: Horst Leitner (Laguna Beach, CA), Anthony Smith (Costa Mesa, CA)
Primary Examiner: James A Shriver, II
Assistant Examiner: Vaughn Coolman
Application Number: 15/639,950
Classifications
Current U.S. Class: Cam Actuated Contact (200/558)
International Classification: B60R 3/02 (20060101);